NEOS Server Home

NEOS Interfaces to FICO-Xpress

WWW Form & Sample Submissions


The NEOS Server offers FICO Xpress for the solution of linear programming (LP) problems that can be modeled in AMPL format. To learn more about the FICO Xpress Optimization Suite, visit the FICO Optimization website.

Using the NEOS Server with FICO Xpress

The user must submit a model in AMPL format to solve a linear program. The examples section of the AMPL website provides examples of models in AMPL format.

The LP problem must be specified by a model file with the options of a data file and a commands file. If the commands file is specified, it must contain the AMPL solve command; however, it must not contain the model or data commands. The model and data files are renamed internally by NEOS.

Note: An email address is required for any submissions to FICO Xpress solvers. This email address will be forwarded to FICO and may be used by FICO for promotional purposes. When using the XML-RPC interface, you must add the line <email></email> to the XML file that is submitted to NEOS.

The commands file may include option settings for FICO Xpress. To specify solver options, add
option xpress_options 'OPTIONS';
where OPTIONS is a list of one or more of the FICO Xpress options listed in Xpress Options for AMPL.

Web Submission Form
Model File
Enter the location of the AMPL model (local file)
Data File
Enter the location of the AMPL data file (local file)
Commands File
Enter the location of the AMPL commands file (local file)
Additional Settings
Dry run: generate job XML instead of submitting it to NEOS
Short Priority: submit to higher priority queue with maximum CPU time of 5 minutes
E-Mail address:
Please do not click the 'Submit to NEOS' button more than once.